Product manual

Series B900-N and B900SW-N Manifold Mounted Electric Guns

E 2006 Nordson Corporation

Part 1041221B

Equipment Shutdown

To safely complete many of the procedures described in this document, the equipment must

first be shut down. The level of shut down required varies by the type of equipment in use

and the procedure being completed.

If required, shut down instructions are specified at the start of the procedure. The levels of

shut down are:

Relieving System Hydraulic Pressure

Completely relieve system hydraulic pressure before breaking any hydraulic connection or

seal. Refer to the melter-specific product manual for instructions on relieving system

hydraulic pressure.

De-energizing the System

Isolate the system (melter, hoses, guns, and optional devices) from all power sources

before accessing any unprotected high-voltage wiring or connection point.

1. Turn off the equipment and all auxiliary devices connected to the equipment (system).

2. To prevent the equipment from being accidentally energized, lock and tag the

disconnect switch(es) or circuit breaker(s) that provide input electrical power to the

equipment and optional devices.

NOTE: Government regulations and industry standards dictate specific requirements

for the isolation of hazardous energy sources. Refer to the appropriate regulation or

standard.

Disabling the Guns

All electrical or mechanical devices that provide an activation signal to the guns, gun

solenoid valve(s), or the melter pump must be disabled before work can be performed on or

around a gun that is connected to a pressurized system.

1. Turn off or disconnect the gun triggering device (pattern controller, timer, PLC, etc.).

2. Disconnect the input signal wiring to the gun solenoid valve(s).

3. Reduce the air pressure to the gun solenoid valve(s) to zero; then relieve the residual air

pressure between the regulator and the gun.